For the longest time, i believed that it was a shame Hooker was removed before he could fight Gettysburg. i always thought that given his chance to make reparations for Chancellorsville, he would have proven as effective as Meade in command, if not moreso for having the reins of command well under control. Rethinking the issue however, I have concluded that Hooker might have become 'gunshy' around Lee, especially the nearer he came to Halleck and the pressures from Washington in his rear. What's more, whereas Meade need only handle his army professionally and limit mistakes before Lee, Hooker only needing to do the same, i am afraid that because he knew he no longer commanded the confidence of his corps commanders, may have tried a Hood-like Franklin stunt to show who was boss. Meade, on the other hand, being cautious and new to command, needed to rely on his commanders' judgments, indeed, he knew he could trust their professional decisions. This helped lead to Union victory at Gettysburg. Conversely, Hooker showed at Chancellorsville that he did not rely on his subordinates views, which helped him lose that battle.
Moreover, Hooker's contributions to the Gettysburg Campaign should not be overlooked. His loosing of his cavalry on Stuart and shadowing the Confederates was superb, as well as his rapid movement north with the corps, crossing the Potomac and sheilding Washington, all worthy of the highset praise.